aa8c4bbf6a9d20576bd65f6b27b769c08be33e73
When we start a service process we pass the selected watchdog timeout to it with the $WATCHDOG_USEC environment variable. If the unit file is reconfigured later, we need to make sure to continue to honour the original timeout, i.e. watch $WATCHDOG_USEC was set to, otherwise we'll expect the ping at a different time as the service process is sending it to us. Hence, whenever we start a unit, save the watchdog timeout, and stick to that for everything we do. Fixes: #9467
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systemd - System and Service Manager
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